From: Lucas Stach <l.stach@pengutronix.de>
Date: Tue, 4 Aug 2015 15:21:04 +0000 (+0200)
Subject: gpu: ipu-v3: add support for ARGB4444 16-bit color format
X-Git-Tag: v4.4-rc1~66^2~5^2~4
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=7d2e8a204aa04b83aca2beb5f1441262c3aa26c8;p=linux.git

gpu: ipu-v3: add support for ARGB4444 16-bit color format

This patch adds support for the ARGB4444 color format.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---

diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index c0b19160a946..ba47b30d28fa 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -65,6 +65,7 @@ enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc)
 	case DRM_FORMAT_BGR565:
 	case DRM_FORMAT_RGB888:
 	case DRM_FORMAT_BGR888:
+	case DRM_FORMAT_ARGB4444:
 	case DRM_FORMAT_XRGB8888:
 	case DRM_FORMAT_XBGR8888:
 	case DRM_FORMAT_RGBX8888:
diff --git a/drivers/gpu/ipu-v3/ipu-cpmem.c b/drivers/gpu/ipu-v3/ipu-cpmem.c
index 0e6b8687c61a..63eb16bf2cf0 100644
--- a/drivers/gpu/ipu-v3/ipu-cpmem.c
+++ b/drivers/gpu/ipu-v3/ipu-cpmem.c
@@ -524,6 +524,14 @@ static const struct ipu_rgb def_argb_16 = {
 	.bits_per_pixel = 16,
 };
 
+static const struct ipu_rgb def_argb_16_4444 = {
+	.red	= { .offset =  8, .length = 4, },
+	.green	= { .offset =  4, .length = 4, },
+	.blue	= { .offset =  0, .length = 4, },
+	.transp = { .offset = 12, .length = 4, },
+	.bits_per_pixel = 16,
+};
+
 static const struct ipu_rgb def_abgr_16 = {
 	.red	= { .offset =  0, .length = 5, },
 	.green	= { .offset =  5, .length = 5, },
@@ -649,6 +657,9 @@ int ipu_cpmem_set_fmt(struct ipuv3_channel *ch, u32 drm_fourcc)
 	case DRM_FORMAT_BGRA5551:
 		ipu_cpmem_set_format_rgb(ch, &def_bgra_16);
 		break;
+	case DRM_FORMAT_ARGB4444:
+		ipu_cpmem_set_format_rgb(ch, &def_argb_16_4444);
+		break;
 	default:
 		return -EINVAL;
 	}